Legendary radio personality Bob Fass revolutionized the FM airwaves in the 1960s and '70s with his free-form program “Radio Unnameable,” a cultural hub for music, politics, and audience engagement. For nearly 50 years, he has been heard at midnight on New York City listener-sponsored station WBAI, utilizing the airwaves for mobilization long before today's innovations in social media. Drawing from Fass's extraordinary personal archive of audio recordings, including interviews with Allen Ginsberg and Abbie Hoffman, and performances by Bob Dylan, Arlo Guthrie, and Carly Simon, Radio Unnameable celebrates the profoundly influential career of one of radio's unsung heroes.